Iqaluit

Created: 2014-01-22 13:31:31
Modified: 2014-02-11 14:41:09

Two holes, second hole instrumented in 1989.

Permafrost present, thickness not known.

Additional information on disturbances: No obvious strong natural or man-made heat sources.  There is an aviation navigation aid on the adjacent hilltop, about 80m distant above the site.  This structure is about 40m across, round and consists of a round building with a series of many small antenna structures in white enclosures on the edge of its roof.

MEAN ANNUAL GROUND TEMPERATURE AT OR NEAR DEPTH OF ZERO ANNUAL AMPLITUDE (°C) - report  value for most recent year or 12 month interval

This hole does not reach zero annual amplitude.

MAGT at 5.0m (deepest) for 1999 was –7.01 and -7.07C respectively for the two holes.

Range of temperatures during 1999 at 5.0m depth were for Cable HT141, -3.81 to -10.81 (convex ground) and for Cable HT142, -4.13 to -10.34C (slightly concave ground).

Depth of zero annual amplitude (or depth of measurement reported above)  (m)

Depth of measurement reported above is 5.0m.

Year or 12 month interval for mean reported above

Year 1999

Range (if applicable) of mean annual ground temperature over observation period (°C)

Range of Mean Annual Ground temperatures for 5m depth between 1988 and 1999 was from -9.9C to -7.0C, with the warmest temperatures in 1999.

NAME AND LOCATION OF CLOSEST CLIMATE STATION (latitude, longitude, and distance from borehole, km) - provide (if available) mean monthly air temperature and snow depth of reporting interval for mean annual ground temperature

Iqaluit A   (airport identifier YFB)

63deg 45min N, 68deg 33min W, Elevation 33.5m a.s.l.

-9.4 C for Year 1999

AIR TEMPERATURE AND SNOW COVER THICKNESS/DENSITY MEASUREMENTS AT THE BOREHOLE SITE (indicate frequency of observations):

Air temperature: Yes [X] No [ ]    Snow thickness: Yes[ ] No[X]   Density: Yes [ ] No[X]

Air temperature at 1.5m ht. is measured every minute, and the 3-hourly average is reported.